2024-06-08_9a93cf4f0011186f15fba9aed6dcafac_ryuk

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General

Target
2024-06-08_9a93cf4f0011186f15fba9aed6dcafac_ryuk
Size 1.6MB
Sample240608-k4668abe77
SHA256 71d5f7bceee247b062b17f87911b725a1a42f5b37081ea771a94b1e445e30d73
MD5 9a93cf4f0011186f15fba9aed6dcafac
SHA1 04b372680025f5d25b70e558455eea162e29fec8
SHA512 056c332a5232d5ff717eb063cf807ed9ea9711ab2e70d68bf521a736b96abd9113075fcbb7136b165d0360f2732093ade3332c64a8e12c5f17351275ae87b2f8
SSDEEP 24576:kPxXh8qZZuu/DtFy/e/HAuzlOpZeT3WBvoKFLgYHJWwl24C15rDY:kBuq6eDtM/6HAMlKQKKYpWwl1+NY
MD5 SHA1 SHA512 SSDEEP

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
2024-06-08_9a93cf4f0011186f15fba9aed6dcafac_ryuk

File Explorer

2024-06-08_9a93cf4f0011186f15fba9aed6dcafac_ryuk

.exe 1.6MB

2024-06-08_9a93cf4f0011186f15fba9aed6dcafac_ryuk

IMPHASH 92ed8fb21c381a073a5e7ca35347f90e
SHA256 71d5f7bceee247b062b17f87911b725a1a42f5b37081ea771a94b1e445e30d73
MD5 9a93cf4f0011186f15fba9aed6dcafac
SHA1 04b372680025f5d25b70e558455eea162e29fec8
SHA512 056c332a5232d5ff717eb063cf807ed9ea9711ab2e70d68bf521a736b96abd9113075fcbb7136b165d0360f2732093ade3332c64a8e12c5f17351275ae87b2f8
SSDEEP 24576:kPxXh8qZZuu/DtFy/e/HAuzlOpZeT3WBvoKFLgYHJWwl24C15rDY:kBuq6eDtM/6HAMlKQKKYpWwl1+NY
MD5 SHA1 SHA512 SSDEEP

Unsigned PE

Checks for missing Authenticode signature.

Minor OS version

Major OS version

Entry point

475888

Magic Number

523

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_GUI

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA IMAGE_DLLCHARACTERISTICS_NX_COMPAT IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_LARGE_ADDRESS_AWARE

PDB paths

C:\b\s\w\ir\cache\builder\src\out\Release_x64\chrome_proxy.exe.pdb

advapi32

CreateProcessAsUserW EventRegister EventSetInformation EventUnregister EventWrite RegCloseKey RegOpenKeyExW RegQueryValueExW SystemFunction036

kernel32

AcquireSRWLockExclusive AssignProcessToJobObject CloseHandle CompareStringW CreateEventW CreateFileW CreateProcessW CreateThread DeleteCriticalSection DeleteFileW DeleteProcThreadAttributeList DuplicateHandle EncodePointer EnterCriticalSection EnumSystemLocalesW ExitProcess ExitThread ExpandEnvironmentStringsW FindClose FindFirstFileExW FindNextFileW FlsAlloc FlsFree FlsGetValue FlsSetValue FlushFileBuffers FormatMessageA FreeEnvironmentStringsW FreeLibrary FreeLibraryAndExitThread GetACP GetCPInfo GetCommandLineA GetCommandLineW GetConsoleMode GetConsoleOutputCP GetCurrentDirectoryW GetCurrentProcess GetCurrentProcessId GetCurrentThread GetCurrentThreadId GetDateFormatW GetDriveTypeW GetEnvironmentStringsW GetExitCodeProcess GetFileAttributesW GetFileSizeEx GetFileType GetFullPathNameW GetLastError GetLocalTime GetLocaleInfoW GetModuleFileNameW GetModuleHandleA GetModuleHandleExW GetModuleHandleW GetNativeSystemInfo GetOEMCP GetProcAddress GetProcessHeap GetProcessId GetProductInfo GetStartupInfoW GetStdHandle GetStringTypeW GetSystemDirectoryW GetSystemInfo GetSystemTimeAsFileTime GetTempPathW GetThreadId GetThreadPriority GetTickCount GetTimeFormatW GetTimeZoneInformation GetUserDefaultLCID GetVersionExW GetWindowsDirectoryW InitOnceExecuteOnce InitializeCriticalSectionAndSpinCount InitializeProcThreadAttributeList InitializeSListHead IsDebuggerPresent IsProcessorFeaturePresent IsValidCodePage IsValidLocale IsWow64Process LCMapStringW LeaveCriticalSection LoadLibraryExA LoadLibraryExW LocalFree MultiByteToWideChar OutputDebugStringA QueryPerformanceCounter QueryPerformanceFrequency QueryThreadCycleTime RaiseException ReadConsoleW ReadFile ReleaseSRWLockExclusive ResetEvent RtlCaptureContext RtlCaptureStackBackTrace RtlLookupFunctionEntry RtlPcToFileHeader RtlUnwind RtlUnwindEx RtlVirtualUnwind SetEnvironmentVariableW SetEvent SetFilePointerEx SetHandleInformation SetLastError SetStdHandle SetThreadPriority SetUnhandledExceptionFilter Sleep SleepConditionVariableSRW TerminateProcess TlsAlloc TlsFree TlsGetValue TlsSetValue TryAcquireSRWLockExclusive UnhandledExceptionFilter UnregisterWaitEx UpdateProcThreadAttribute VirtualAlloc VirtualFree VirtualProtect VirtualQuery WaitForSingleObject WaitForSingleObjectEx WakeAllConditionVariable WakeConditionVariable WideCharToMultiByte WriteConsoleW WriteFile lstrlenA

userenv

CreateEnvironmentBlock DestroyEnvironmentBlock

user32

AllowSetForegroundWindow GetActiveWindow

shell32

CommandLineToArgvW SHGetFolderPathW SHGetKnownFolderPath ShellExecuteExW

winmm

timeGetTime

ole32

CoRevokeInitializeSpy CoTaskMemFree CoUninitialize

Name

.text

Size

848KB

Virtual Size

848KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.rdata

Size

151KB

Virtual Size

150KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.data

Size

62KB

Virtual Size

103KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.pdata

Size

32KB

Virtual Size

31KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.00cfg

Size

512B

Virtual Size

48B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.gxfg

Size

10KB

Virtual Size

9KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.retplne

Size

512B

Virtual Size

140B

Characteristics

Name

.tls

Size

512B

Virtual Size

441B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

_RDATA

Size

512B

Virtual Size

348B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.rsrc

Size

2KB

Virtual Size

2KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.reloc

Size

572KB

Virtual Size

576KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_DISCARDABLE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Sharing

General

Malware Config

Signatures

File Explorer

2024-06-08_9a93cf4f0011186f15fba9aed6dcafac_ryuk

advapi32

kernel32

userenv

user32

shell32

winmm

ole32

generic